Sildenafil-d8 CAS 951385-68-5
| CAS No. | 951385-68-5 |
| Molecular Formula | - |
| Molecular Weight | 482.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Sildenafil-d8 (CAS 951385-68-5), molecular formula C22H22D8N6O4S and molecular weight 482.63 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to deuterium isotope labeling, a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Sildenafil-d8 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 482.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Sildenafil-d8 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H22D8N6O4S |
| Molecular Weight | 482.63 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Sildenafil Standards
- Sildenafil-D3 (CAS 1126745-90-1)
- Sildenafil Impurity 288 (CAS CATO-C4X-1128288)
- Sildenafil Impurity 42 (CAS 2146091-79-2)
- Sildenafil Impurity 88 (CAS CATO-C4X-112888)
- Sildenafil Impurity 289 (CAS CATO-C4X-1128289)
- Sildenafil EP Impurity A (CAS 1391053-95-4)
- Sildenafil Impurity 84 (CAS CATO-C4X-112884)
- Sildenafil EP Impurity B (CAS 1094598-75-0)
Recommended Standards
- Ethyl 2-(2-(N-cyclohexyl-4-methylbenzamido)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 332162-37-5)
- Tirofiban Impurity 105 (CAS CATO-C4X-1254105)
- RF9 (CAS 876310-60-0)
- Abemaciclib Impurity 178 (CAS 1942029-13-1)
- 5-CHloro-1-(3-methylbutyl)-1h-pyrazole (CAS 1551657-98-7)
- 6-Methoxy-N-[3-(trifluoromethyl)phenyl]-2H-chromene-3-carboxamide (CAS 338760-55-7)
- Methyl 2-(4-fluorophenyl)-4-(3-methoxyphenyl)-4-oxobutanoate (CAS 344280-52-0)
- Trametinib Impurity N5 (CAS 1620017-29-9)
- Azide-PEG3-Desthiobiotin (CAS 1426828-06-9)
- N-(4-Fluorophenyl)-3-(4-methoxyphenyl)-2-(2H-1,2,3,4-tetrazol-5-yl)propanamide (CAS 483993-11-9)
- 1-(3-Bromo-2,4-dihydroxyphenyl)ethan-1-one (CAS 60990-39-8)
- 6-Bromo-2,2,4,4-tetrafluoro-4H-benzo[d][1,3]dioxine (CAS 261762-36-1)
- 2-chloro-N-[1-(5,6,7,8-tetrahydronaphthalen-2-yl)ethyl]propanamide (CAS 1153022-44-6)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com